18045093 has 12 divisors (see below), whose sum is σ = 26446784. Its totient is φ = 10936200.

The previous prime is 18045067. The next prime is 18045173. The reversal of 18045093 is 39054081.

It is not a de Polignac number, because 18045093 - 2¹⁰ = 18044069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18045093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18043093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24493 + ... + 25218.

Almost surely, 2^18045093 is an apocalyptic number.

It is an amenable number.

18045093 is a deficient number, since it is larger than the sum of its proper divisors (8401691).

18045093 is a wasteful number, since it uses less digits than its factorization.

18045093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49736 (or 49725 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 18045093 is about 4247.9516240183. The cubic root of 18045093 is about 262.2928033919.

The spelling of 18045093 in words is "eighteen million, forty-five thousand, ninety-three".